Awọn ohun elo itupale elekitiroti jẹ lilo lati ṣawari awọn ions potasiomu, ions soda, ions kiloraidi, kalisiomu ionized ati ions lithium lati awọn ayẹwo.Ayẹwo le jẹ gbogbo ẹjẹ, omi ara, pilasima, ito, dialysate, ati omi hydration.O jẹ ohun elo pataki ninu yàrá.